Season 4, Episode 20 Chuck Versus the Family Volkoff

First Aired: April 11, 2011

When the CIA targets Vivian (Lauren Cohan) for death, Chuck tries to save her by forming a shadowy alliance with a dangerous enemy. Meanwhile, Sarah jolts Chuck with a relationship revelation; Ellie continues to dig into her father's past, but her mother (Linda Hamilton) may be trying to foil that effort. Timothy Dalton and Mekenna Melvin guest star.